9210 remove KMDB branch debugging support
9211 ::crregs could do with cr2/cr3 support
9209 ::ttrace should be able to filter by thread
Reviewed by: Patrick Mooney <patrick.mooney@joyent.com>

@@ -19,20 +19,19 @@
  * CDDL HEADER END
  */
 /*
  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
+ *
+ * Copyright 2018 Joyent, Inc.
  */
 
-#pragma ident   "%Z%%M% %I%     %E% SMI"
-
 /*
  * isa-dependent portions of the kmdb target
  */
 
 #include <kmdb/kvm.h>
-#include <kmdb/kvm_cpu.h>
 #include <kmdb/kmdb_kdi.h>
 #include <kmdb/kmdb_asmutil.h>
 #include <mdb/mdb_debug.h>
 #include <mdb/mdb_err.h>
 #include <mdb/mdb_list.h>

@@ -99,18 +98,10 @@
                 return (set_errno(EMDB_TGTNOTSUP));
 
         return (mdb_isa_step_out(t, p, pc, fp, sp, instr));
 }
 
-int
-kmt_step_branch(mdb_tgt_t *t)
-{
-        kmt_data_t *kmt = t->t_data;
-
-        return (kmt_cpu_step_branch(t, kmt->kmt_cpu));
-}
-
 /*
  * Return the address of the next instruction following a call, or return -1
  * and set errno to EAGAIN if the target should just single-step.
  */
 int

@@ -354,23 +345,10 @@
         }
 
         return (DCMD_OK);
 }
 
-int
-kmt_msr_validate(const kdi_msr_t *msr)
-{
-        uint64_t val;
-
-        for (/* */; msr->msr_num != 0; msr++) {
-                if (kmt_rwmsr(msr->msr_num, &val, rdmsr) < 0)
-                        return (0);
-        }
-
-        return (1);
-}
-
 /*ARGSUSED*/
 ssize_t
 kmt_write(mdb_tgt_t *t, const void *buf, size_t nbytes, uintptr_t addr)
 {
         if (!(t->t_flags & MDB_TGT_F_ALLOWIO) &&